Asolution of ammonia has a ph of 11.8. what is the concentration of oh– ions in the solution? useful formulas..

If the atomic mass of an atom is 34 and the atom contains 13 protons, how many neutrons does the atom contain?

Scientific evidence tells us that the cause of earths four season is the tilt of earth as it revolves around the sun. the student is instructed to illustrate this information in a science notebook. how will the student illiterate winter in the northern hemisphere?

Which of these expressions are correct variations of the combined gas law? p1v1t2 = p2v2t1 both